Modify trade-in invoice rule to use price tiers. #789

src/InvoiceRule/TradeIn.php

@@ -6,8 +6,17 @@ use App\InvoiceRuleInterface;
 
 use App\Ramcar\TradeInType;
 
+use App\Service\PriceTierManager;
+
 class TradeIn implements InvoiceRuleInterface
 {
+    protected $pt_manager;
+
+    public function __construct(PriceTierManager $pt_manager)
+    {
+        $this->pt_manager = $pt_manager;
+    }
+
     public function getID()
     {
         return 'trade-in';
@@ -17,10 +26,14 @@ class TradeIn implements InvoiceRuleInterface
     {
         $items = [];
 
+        $pt = $criteria->getPriceTier();
+
         // get the entries
         $entries = $criteria->getEntries();
         foreach($entries as $entry)
         {
+            // TODO: this might need some changes once merged with the
+            // rider app changes
             $batt = $entry['battery'];
             $qty = $entry['qty'];
             $trade_in_type = null;
@@ -30,7 +43,7 @@ class TradeIn implements InvoiceRuleInterface
 
             if ($trade_in_type != null)
             {
-                $ti_rate = $this->getTradeInRate($batt, $trade_in_type);
+                $ti_rate = $this->getTradeInRate($batt, $trade_in_type, $pt);
 
                 $qty_ti = bcmul($ti_rate, $qty, 2);
 
@@ -60,21 +73,27 @@ class TradeIn implements InvoiceRuleInterface
         return null;
     }
 
-    protected function getTradeInRate($battery, $trade_in_type)
+    protected function getTradeInRate($battery, $trade_in_type, $pt_id)
     {
         $size = $battery->getSize();
+        $size_id = $size->getID();
 
-        switch ($trade_in_type)
+        $tip = $this->pt_manager->getTradeInPrice($pt_id, $size_id, $trade_in_type);
+
+        if ($tip == null)
         {
-            case TradeInType::MOTOLITE:
+            switch ($trade_in_type)
-                return $size->getTIPriceMotolite();
+            {
-            case TradeInType::PREMIUM:
+                case TradeInType::MOTOLITE:
-                return $size->getTIPricePremium();
+                    return $size->getTIPriceMotolite();
-            case TradeInType::OTHER:
+                case TradeInType::PREMIUM:
-                return $size->getTIPriceOther();
+                    return $size->getTIPricePremium();
+                case TradeInType::OTHER:
+                    return $size->getTIPriceOther();
+            }
         }
 
-        return 0;
+        return $tip;
     }
 
     protected function getTitle($battery, $trade_in_type)

src/Service/InvoiceManager.php

@@ -55,7 +55,7 @@ class InvoiceManager implements InvoiceGeneratorInterface
             new InvoiceRule\Fuel($this->em, $this->pt_manager),
             new InvoiceRule\TireRepair($this->em, $this->pt_manager),
             new InvoiceRule\DiscountType($this->em),
-            new InvoiceRule\TradeIn(),
+            new InvoiceRule\TradeIn($this->pt_manager),
             new InvoiceRule\Tax($this->em, $this->pt_manager),
         ]; 
     }

src/Service/PriceTierManager.php

@@ -7,6 +7,7 @@ use Doctrine\ORM\EntityManagerInterface;
 use CrEOF\Spatial\PHP\Types\Geometry\Point;
 
 use App\Entity\PriceTier;
+use App\Entity\TradeInPrice;
 
 class PriceTierManager
 {
@@ -51,6 +52,41 @@ class PriceTierManager
         return $actual_price;
     }
 
+    public function getTradeInPrice($pt_id, $battery_size_id, $trade_in_type)
+    {
+        // find the trade in price, given the price tier and battery size id
+        $db_conn = $this->em->getConnection();
+
+        $tip_sql = 'SELECT tip.meta_info AS metainfo
+            FROM trade_in_price tip
+            WHERE tip.price_tier_id = :pt_id
+            AND tip.item_id = :battery_size_id';
+
+        $tip_stmt = $db_conn->prepare($tip_sql);
+        $tip_stmt->bindValue('pt_id', $pt_id);
+        $tip_stmt->bindValue('battery_size_id', $battery_size_id);
+
+        $tip_result = $tip_stmt->executeQuery();
+
+        $actual_tip = null;
+
+        // go through the rows
+        while ($row = $tip_result->fetchAssociative())
+        {
+            // get the price
+            $meta_info = $row['metainfo'];
+            $metadata = json_decode($meta_info, true);
+            if (isset($metadata[$trade_in_type]))
+            {
+                $tip = $metadata[$trade_in_type];
+
+                $actual_tip = number_format($tip / 100, 2, '.', '');
+            }
+        }
+
+        return $actual_tip;
+    }
+
     public function getPriceTier(Point $coordinates)
     {
         $price_tier_id = 0;